In pea plants, spherical seeds (S) are dominant to dented seeds (s). In a genetic cross of two plants that are heterozygous for the seed shape trait, what is the expected phenotypic ratio?
In humans, being colorblind, a sex linked trait, is recessive to normal vision, and lactose intolerance is recessive to normal digestion. If a woman who is colorblind and can digest lacotse, but had a lactose intolerant father, has children with a man who has normal vision, and is lactose intolerant, what are the possible phenotypes of the children and in what proportions?
A woman working with the FBI is trying to find a husband. She has the blood types of three candidates. One of them has O type blood (i, i), one has AB (I^A, I^B) type blood, and one has B type blood (I^B, i). The woman is type O. She does not want to pass on her blood type to any children. Which candidate will provide the woman with 0% chance of type O children? --Hannah Firestone, multiple alleles
In flies, black eyes (B) are a sex-linked gene, and white eyes (b) are the normal condition. The phenotypes of one cross are the following: 306 white eyed males, 0 black eyed males, 0 white eyed females, and 301 black eyed females. What are the genotypes and phenotypes of the parent flies?
In dogs, wire hair (S) is dominant to smooth (s). In a cross of a homozygous wire-haired dog with a smooth-haired dog, what will be the phenotype of the F1 generation?
A girl has three dogs, one has black fur, one has white fur, and one has grey fur. The heterozygous condition of one black allele (B) and one white allele (b) is grey. If a black furred dog is mated with a grey furred dog, what percentage of their offspring will have white fur? What will the phenotypes be for the F1 generation?
In northeast Kansas there is a creature know as a wildcat. It comes in three colors, blue, red, and purple. This trait is controlled by a single locus gene with incomplete dominance. A homozygous (BB) individual is blue, a homozygous (bb) individual is red, and a heterozygous (Bb) individual is purple. What would be the genotypes and phenotypes of the offspring if a purple wildcat were crossed with a red one?
Three men are sitting in a hotel lobby. One of the men brings up the topic of blood types. He reveals that his dad was type B and his mom was type A, he is type A. His friends are type O and type AB. Suddenly a woman runs into the lobby with a near fatal wound, she doesn't know her own blood type, but she says her dad was type O and her mom was type Homozygous A. Which one(s) of them can donate your blood to save the dying woman? But wait there's more! Despite their potential life saving blood types, none of them decided to donate their blood. At the hospital the woman recovers with a blood transfusion from an anonymous donor. The doctor says she is pregnant, and one of the men is the father. The baby's blood type is B. Which one(s) of the men could be the father?
1. In Japanese four o'clock plants red (R) color is incompletely dominant over white (r) flowers, and the heterozygous condition (Rr) results in plants with pink flowers. For each of the following construct a punnett square and give phenotypic and genotype ratios of the offspring. a) a red plant and a white plant } b) a red plant and a pink plant } c) a white plant and a pink plant d) two pink plants
In humans, color blindness is a recessive sex-linked trait. Eye color is an autosomal trait, with brown eye color dominant over blue eye color. A brown-eyed, color blind man whose mother was blue-eyed marries a brown-eyed, normal visioned woman whose father was blue-eyed and color blind. What are the chances that their child will be color blind? What are the chances their child will have blue eyes? Brown eyes? List the possible phenotypes and include a Punnet square with your answer.
In humans, attached earlobes are a recessive trait. A man who has free earlobes, but has a father who has attached earlobes marries a woman with attached earlobes. Using a Punnet square find the genotypes and the genotypic ratio of the offspring.
In pea plants, purple flowers (P) are dominant to white flowers (p). If a homozygous purple flowered plant was crossed with a white flowered plant, what is the expected phenotypic ratio and the possible genotypes of the F1 generation? F2 generation?
A tall pea plant with terminal flowers (flowers on the end of the stems) is crossed with a short plant that has axial flowers. All 72 offspring are tall with axial flowers.
a. List the dominant and recessive alleles b. Give the genotypes of the parents, and the possible phenotypes for the F1 generation. c. Predict the F2 offspring when the F1 tall-axial pea plants are crossed with each other.
The ability to roll your tongue (R) is determined by a dominant gene while the recessive gene results in the inability to roll your tongue (r). A man and his wife can both roll their tongues and are surprised to find that their son cannot. Explain this by showing the genotypes of all three people.
In cats, the gene for tail length shows incomplete dominance. Long tails are dominant, over recessive short tails. When a pair of heterozygous alleles is produced, the offspring has a medium length tail. For each of the following, construct a punnett square and give the phenotypic and genotypic ratios of the offspring. A) Long tailed cat and short tailed cat B) Long tailed cat and cat with medium length tail C) Cat with medium length tail and short tailed cat D) Two cats with medium length tails
In humans the being color blind is a recessive sex linked trait. If two people from the f1 generation marry and they produce only colorblind children what would be the genotypes of the p1 and the f1
In a particular type of fish, a "G" allele produces green scales, which is dominant to the "g" allele which produces blue scales. Cross a male heterozygous green fish with a female homozygous recessive blue fish. What genotype and phenotype ratios do we get if we cross these two fish?
In Hawks, the red tail feathers are recessive to brown tail feathers. The dark yellow talons are dominant over light yellow talons. If the F1 generation is a red tailed, with dark yellow talons, What are the phenotypes of the parents?
In pea plants, spherical seeds (S) are dominant to dented seeds (s). In a genetic cross of two plants that are heterozygous for the seed shape trait, what fraction of the offspring should have spherical seeds?
A man and a woman get married and have 3 children, all of whom have type AB blood. What are the genotypes of the parents?
Years later the woman has another child who has type A blood. The child grows up and realizes that it is not possible for her father to be her biological father. Why not?
In a certain species of birds, the heterozygous condition of one yellow allele (Y) and one red allele (y) is orange (Yy). If two of these birds mate, what would be the possible colors, and what percentage of each color would their be?
Red-green color blindness is a sex-linked recessive trait. A woman with normal vision whose father was colorblind marries a man with normal vision. What is the genotype of each of these people? What can you predict about their children?
Colorblindness is a recessive, sex-linked trait. Albinism is a recessive autosomal trait. A colorblind, albino man marries a woman who is neither colorblind nor albino but whose father was colorblind and whose mother was albino. What are the possible phenotypes and genotypes of their children?
Kim’s father, Alfred, is rushed to the hospital after a serious car accident, and needs a blood transfusion. Kim offers to be tested to see if she can be a donor. Kim has type A blood. Her father is type O. Kim is surprised, and wonders if she might be adopted and didn’t know. Can Alfred be her father?
Hemophilia is due to a sex-linked recessive gene (Xh) and the normal condition to the gene (XH). A hemophiliac man marries a woman who is not. Their first son has hemophilia. What are the chances that their daughter, if they had one, will be hemophilic?
In humans Straight hair (S) is dominant over curly hair(s). Two parents that both have straight hair but one of there parents had curly hair have 4 children. What are the genotype ratios of the F1 generation.
In birds, the offspring produced by crossing yellow birds(YY) with blue birds (yy) is green(Yy). Based upon this information, what proportions of bird colors will be produced from each of the following crosses? - Yellow x blue -blue x green - yellow green - green x green
A male that has an O blood type, is color blind, and has duchenne muscular dystrophy has a father that was albino and a mother that was normally pigmented marries an albino female that is not a carrier for color blindness, is a carrier for hemophilia, and is a carrier for male paternal blindness. Using a punnett square what percentage chance does a male have of being without any of these birth defects?
Suppose a father of group A and a mother of group O have a child of group O. What are the chances that their child will be phenotype... -group O -group B -group A -group AB
Multiple Alleles: A test was done to determine the biological father of a child. The child's blood Type is A and the mother's is B. Man #1 has a blood type of O, and Man #2 has blood type AB. Which one is the biological father?
What is the chance of having a black haired(B), colorblind(h) offspring if the mom is heterozygous black haired and colorblind, and the dad is blonde haired(b)and has normal vision(H).
A naturalist visiting an island in the middle of a large lake observes a species of small bird with three distinct types of beaks. Those with short, crushing beaks (BB) consume hard shelled nuts, those with long, delicate beaks (bb) pick the seeds from pine cones, and those with intermediate beaks (Bb), consume both types of seeds though they are not as good at either. Assume that this difference in beak morphology is the result of incomplete dominance in a single locus gene. Which of the mated pairs below will have the best adapted offspring in a year in which most of the food available is in the form of hard shelled nuts?
In Labrador retrievers, there are different coat colors. Black (B), chocolate (b). Ability to represent pigments (E), and inability to represent dark colors (e). In order for a yellow lab to be born, the genotype must be either Bbee or BBee. What are the chances of having yellow labs if the parents are BbEe (black) and bbEe (chocolate)?
In a world of all cats there are only two types of cats. They are either purple (dominant), or orange. Those cats can either have round (dominant) or square eyes. A heterozygous purple cat with square eyes had a baby cat who had purple fur and round eyes. What were the traits of the adult cats mate.
In summer squash, white fruit color (W) is dominant over yellow fruit color (w) and disk-shaped fruit (D) is dominant over sphere-shaped fruit (d).. If a squash plant true-breeding for white, disk-shaped fruit is crossed with a plant true-breeding for yellow, sphere-shaped fruit, what will the phenotypic and genotypic ratios be for:
In south african elephants, grey skin (G) dominant over purple skin (g), and white tusks (W) tusks are dominant over neon tusks (w). If two heterozygous south african elephants cross, what are the possible phenotypes for the off spring? What is the probablity for getting a purple skin, neon tusk elephant?
A mother with type O blood has a family history of diseases that lead to needing donated blood. Because of this, she does not want to pass on this blood type to her offspring. She is interested in a man with type A blood (I^A, i). If she marries this person as has chidren, what is the chance that the child will have type O blood?
Colorblindness is a sex-linked recessive gene. A colorblind woman marries a man with normal vision. What are the expected phenotypic ratios for their children?
In humans, brown eyes (B) are dominant over blue (b)*. A brown-eyed man marries a blue-eyed woman and they have three children, two of whom are brown-eyed and one of whom is blue-eyed. Draw the Punnett square that illustrates this marriage. What is the man’s genotype? What are the genotypes of the children?
In flowers red (R) is incompletely dominant over white (r). Having one allele for red and one for white results in a flower being pink (Rr). What are the phenotypic ratios in the F1 generation of a red flower and a white flower? What would be the phenotypic ratios if you were to cross two flowers from the F1 generation?
In pea plants, spherical seeds (S) are dominant to dented seeds (s). In a genetic cross of two plants that are heterozygous for the seed shape trait, what is the expected phenotypic ratio?
ReplyDeleteIn humans, being colorblind, a sex linked trait, is recessive to normal vision, and lactose intolerance is recessive to normal digestion. If a woman who is colorblind and can digest lacotse, but had a lactose intolerant father, has children with a man who has normal vision, and is lactose intolerant, what are the possible phenotypes of the children and in what proportions?
ReplyDeleteA woman working with the FBI is trying to find a husband. She has the blood types of three candidates. One of them has O type blood (i, i), one has AB (I^A, I^B) type blood, and one has B type blood (I^B, i). The woman is type O. She does not want to pass on her blood type to any children. Which candidate will provide the woman with 0% chance of type O children?
ReplyDelete--Hannah Firestone, multiple alleles
In flies, black eyes (B) are a sex-linked gene, and white eyes (b) are the normal condition. The phenotypes of one cross are the following: 306 white eyed males, 0 black eyed males, 0 white eyed females, and 301 black eyed females. What are the genotypes and phenotypes of the parent flies?
ReplyDeleteIn dogs, wire hair (S) is dominant to smooth (s). In a cross of a homozygous wire-haired dog with a smooth-haired dog, what will be the phenotype of the F1 generation?
ReplyDeleteA girl has three dogs, one has black fur, one has white fur, and one has grey fur. The heterozygous condition of one black allele (B) and one white allele (b) is grey. If a black furred dog is mated with a grey furred dog, what percentage of their offspring will have white fur? What will the phenotypes be for the F1 generation?
ReplyDeleteIn northeast Kansas there is a creature know as a wildcat. It comes in three colors, blue, red, and purple. This trait is controlled by a single locus gene with incomplete dominance. A homozygous (BB) individual is blue, a homozygous (bb) individual is red, and a heterozygous (Bb) individual is purple. What would be the genotypes and phenotypes of the offspring if a purple wildcat were crossed with a red one?
ReplyDeleteThree men are sitting in a hotel lobby. One of the men brings up the topic of blood types. He reveals that his dad was type B and his mom was type A, he is type A. His friends are type O and type AB. Suddenly a woman runs into the lobby with a near fatal wound, she doesn't know her own blood type, but she says her dad was type O and her mom was type Homozygous A. Which one(s) of them can donate your blood to save the dying woman?
ReplyDeleteBut wait there's more!
Despite their potential life saving blood types, none of them decided to donate their blood.
At the hospital the woman recovers with a blood transfusion from an anonymous donor. The doctor says she is pregnant, and one of the men is the father.
The baby's blood type is B.
Which one(s) of the men could be the father?
1. In Japanese four o'clock plants red (R) color is incompletely dominant over white (r) flowers, and the heterozygous condition (Rr) results in plants with pink flowers. For each of the following construct a punnett square and give phenotypic and genotype ratios of the offspring.
ReplyDeletea) a red plant and a white plant }
b) a red plant and a pink plant }
c) a white plant and a pink plant
d) two pink plants
In humans, color blindness is a recessive sex-linked trait. Eye color is an autosomal trait, with brown eye color dominant over blue eye color. A brown-eyed, color blind man whose mother was blue-eyed marries a brown-eyed, normal visioned woman whose father was blue-eyed and color blind. What are the chances that their child will be color blind? What are the chances their child will have blue eyes? Brown eyes? List the possible phenotypes and include a Punnet square with your answer.
ReplyDeleteIn humans, attached earlobes are a recessive trait. A man who has free earlobes, but has a father who has attached earlobes marries a woman with attached earlobes. Using a Punnet square find the genotypes and the genotypic ratio of the offspring.
ReplyDeleteIn pea plants, purple flowers (P) are dominant to white flowers (p). If a homozygous purple flowered plant was crossed with a white flowered plant, what is the expected phenotypic ratio and the possible genotypes of the F1 generation? F2 generation?
ReplyDeleteA tall pea plant with terminal flowers (flowers on the end of the stems) is crossed with a short plant that has axial flowers. All 72 offspring are tall with axial flowers.
ReplyDeletea. List the dominant and recessive alleles
b. Give the genotypes of the parents, and the possible phenotypes for the F1 generation.
c. Predict the F2 offspring when the F1 tall-axial pea plants are crossed with each other.
The ability to roll your tongue (R) is determined by a dominant gene while the recessive gene results in the inability to roll your tongue (r). A man and his wife can both roll their tongues and are surprised to find that their son cannot. Explain this by showing the genotypes of all three people.
ReplyDeleteIn cats, the gene for tail length shows incomplete dominance. Long tails are dominant, over recessive short tails. When a pair of heterozygous alleles is produced, the offspring has a medium length tail. For each of the following, construct a punnett square and give the phenotypic and genotypic ratios of the offspring.
ReplyDeleteA) Long tailed cat and short tailed cat
B) Long tailed cat and cat with medium length tail
C) Cat with medium length tail and short tailed cat
D) Two cats with medium length tails
In humans the being color blind is a recessive sex linked trait.
ReplyDeleteIf two people from the f1 generation marry and they produce only colorblind children what would be the genotypes of the p1 and the f1
In a particular type of fish, a "G" allele produces green scales, which is dominant to the "g" allele which produces blue scales. Cross a male heterozygous green fish with a female homozygous recessive blue fish. What genotype and phenotype ratios do we get if we cross these two fish?
ReplyDeleteIn Hawks, the red tail feathers are recessive to brown tail feathers. The dark yellow talons are dominant over light yellow talons. If the F1 generation is a red tailed, with dark yellow talons, What are the phenotypes of the parents?
ReplyDeleteIn pea plants, spherical seeds (S) are dominant to dented seeds (s). In a genetic cross of two plants that are heterozygous for the seed shape trait, what fraction of the offspring should have spherical seeds?
ReplyDeleteA man and a woman get married and have 3 children, all of whom have type AB blood.
ReplyDeleteWhat are the genotypes of the parents?
Years later the woman has another child who has type A blood. The child grows up and realizes that it is not possible for her father to be her biological father. Why not?
In a certain species of birds, the heterozygous condition of one yellow allele (Y) and one red allele (y) is orange (Yy). If two of these birds mate, what would be the possible colors, and what percentage of each color would their be?
ReplyDeleteRed-green color blindness is a sex-linked recessive trait. A woman with normal vision whose father was colorblind marries a man with normal vision. What is the genotype of each of these people? What can you predict about their children?
ReplyDeleteColorblindness is a recessive, sex-linked trait. Albinism is a recessive autosomal trait. A colorblind, albino man marries a woman who is neither colorblind nor albino but whose father was colorblind and whose mother was albino. What are the possible phenotypes and genotypes of their children?
ReplyDeleteKim’s father, Alfred, is rushed to the hospital after a serious car accident, and needs a blood transfusion. Kim offers to be tested to see if she can be a donor. Kim has type A blood. Her father is type O. Kim is surprised, and wonders if she might be adopted and didn’t know. Can Alfred be her father?
ReplyDeleteHemophilia is due to a sex-linked recessive gene (Xh) and the normal condition to the gene (XH). A hemophiliac man marries a woman who is not. Their first son has hemophilia. What are the chances that their daughter, if they had one, will be hemophilic?
ReplyDeleteIn humans Straight hair (S) is dominant over curly hair(s). Two parents that both have straight hair but one of there parents had curly hair have 4 children. What are the genotype ratios of the F1 generation.
ReplyDeleteIn birds, the offspring produced by crossing yellow birds(YY) with blue birds (yy) is green(Yy). Based upon this information, what proportions of bird colors will be produced from each of the following crosses?
ReplyDelete- Yellow x blue
-blue x green
- yellow green
- green x green
Suppose a person with type A blood and a person with type B blood get married. What are the possible genotypes their children could have?
ReplyDeleteA male that has an O blood type, is color blind, and has duchenne muscular dystrophy has a father that was albino and a mother that was normally pigmented marries an albino female that is not a carrier for color blindness, is a carrier for hemophilia, and is a carrier for male paternal blindness. Using a punnett square what percentage chance does a male have of being without any of these birth defects?
ReplyDeleteSuppose a father of group A and a mother of group O have a child of group O. What are the chances that their child will be phenotype...
ReplyDelete-group O -group B -group A -group AB
Multiple Alleles:
ReplyDeleteA test was done to determine the biological father of a child. The child's blood Type is A and the mother's is B. Man #1 has a blood type of O, and Man #2 has blood type AB. Which one is the biological father?
What is the chance of having a black haired(B), colorblind(h) offspring if the mom is heterozygous black haired and colorblind, and the dad is blonde haired(b)and has normal vision(H).
ReplyDeleteA naturalist visiting an island in the middle of a large lake observes a species of small bird with three distinct types of beaks. Those with short, crushing beaks (BB) consume hard shelled nuts, those with long, delicate beaks (bb) pick the seeds from pine cones, and those with intermediate beaks (Bb), consume both types of seeds though they are not as good at either. Assume that this difference in beak morphology is the result of incomplete dominance in a single locus gene. Which of the mated pairs below will have the best adapted offspring in a year in which most of the food available is in the form of hard shelled nuts?
ReplyDeleteIn Labrador retrievers, there are different coat colors. Black (B), chocolate (b). Ability to represent pigments (E), and inability to represent dark colors (e). In order for a yellow lab to be born, the genotype must be either Bbee or BBee. What are the chances of having yellow labs if the parents are BbEe (black) and bbEe (chocolate)?
ReplyDeleteIn a world of all cats there are only two types of cats. They are either purple (dominant), or orange. Those cats can either have round (dominant) or square eyes. A heterozygous purple cat with square eyes had a baby cat who had purple fur and round eyes. What were the traits of the adult cats mate.
ReplyDeleteIn summer squash, white fruit color (W) is dominant over yellow fruit color (w) and disk-shaped fruit (D) is dominant over sphere-shaped fruit (d).. If a squash plant true-breeding for white, disk-shaped fruit is crossed with a plant true-breeding for yellow, sphere-shaped fruit, what will the phenotypic and genotypic ratios be for:
ReplyDeleteIn south african elephants, grey skin (G) dominant over purple skin (g), and white tusks (W) tusks are dominant over neon tusks (w). If two heterozygous south african elephants cross, what are the possible phenotypes for the off spring? What is the probablity for getting a purple skin, neon tusk elephant?
ReplyDeleteA mother with type O blood has a family history of diseases that lead to needing donated blood. Because of this, she does not want to pass on this blood type to her offspring. She is interested in a man with type A blood (I^A, i). If she marries this person as has chidren, what is the chance that the child will have type O blood?
ReplyDeleteJeremy Kim
Colorblindness is a sex-linked recessive gene. A colorblind woman marries a man with normal vision. What are the expected phenotypic ratios for their children?
ReplyDeleteIn humans, brown eyes (B) are dominant over blue (b)*. A brown-eyed man marries a blue-eyed woman and they have three children, two of whom are brown-eyed and one of whom is blue-eyed. Draw the Punnett square that illustrates this marriage. What is the man’s genotype? What are the genotypes of the children?
ReplyDeleteIn flowers red (R) is incompletely dominant over white (r). Having one allele for red and one for white results in a flower being pink (Rr). What are the phenotypic ratios in the F1 generation of a red flower and a white flower? What would be the phenotypic ratios if you were to cross two flowers from the F1 generation?
ReplyDelete